<template>
  <div class="login-container">
    <div class="login-inside-container">
      <!-- 登录左侧 -->
      <div class="login-left">
        <h1>欢迎使用</h1>
        <h3>昨非智慧办公平台</h3>
      </div>
      <!-- 登录右侧 -->
      <div class="login-right">
        <el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form" auto-complete="on"
          label-position="left">

          <div class="title-container">
            <img src="@/assets/image/logo.png" alt="logo">
          </div>

          <el-form-item prop="username">
            <span class="svg-container">
              <svg-icon icon-class="user" style="color: #3582FB;" />
            </span>
            <el-input ref="username" v-model="loginForm.username" placeholder="请输入账号" name="username" type="text"
              tabindex="1" auto-complete="on" />
          </el-form-item>

          <el-form-item prop="password">
            <span class="svg-container">
              <svg-icon icon-class="password" style="color: #3582FB;" />
            </span>
            <el-input :key=" passwordType" ref="password" v-model="loginForm.password" :type="passwordType"
              placeholder="请输入密码" name="password" tabindex="2" auto-complete="on" @keyup.enter.native="handleLogin" />
            <span class="show-pwd" @click="showPwd">
              <svg-icon :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'" />
            </span>
          </el-form-item>

          <el-button :loading="loading" type="primary"
            style="width:100%; height: 48px; margin-bottom:30px;margin-top: 60px; font-size: 16px;" @click="handleLogin"
            @click.native.enter="handleLogin">
            登录</el-button>

        </el-form>
      </div>
    </div>
  </div>
</template>

<script>
  import { validUsername } from '@/utils/validate'

  export default {
    name: 'Login',
    data() {
      const validateUsername = (rule, value, callback) => {
        if (!value) { // !validUsername(value)
          callback(new Error('请输入正确的用户名'))
        } else {
          callback()
        }
      }
      const validatePassword = (rule, value, callback) => {
        if (value.length < 6) {
          callback(new Error('请输入正确的密码'))
        } else {
          callback()
        }
      }
      return {
        loginForm: {
          username: '',
          password: ''
        },
        loginRules: {
          username: [{ required: true, trigger: 'change', validator: validateUsername }],
          password: [{ required: true, trigger: 'change', validator: validatePassword }]
        },
        loading: false,
        passwordType: 'password',
        redirect: undefined
      }
    },
    watch: {
      $route: {
        handler: function (route) {
          this.redirect = route.query && route.query.redirect
        },
        immediate: true
      }
    },
    methods: {
      showPwd() {
        if (this.passwordType === 'password') {
          this.passwordType = ''
        } else {
          this.passwordType = 'password'
        }
        this.$nextTick(() => {
          this.$refs.password.focus()
        })
      },
      //登录业务：发送请求带着用户名和密码给服务器（成功和失败）
      handleLogin() {
        //验证表单账号密码
        this.$refs.loginForm.validate(valid => {
          if (valid) { // 验证通过
            this.loading = true //开启登录按钮加载动画
            //派发action并携带账号密码
            this.$store.dispatch('user/login', this.loginForm).then(() => {//账号密码正确服务器正确返回token
              this.$router.push({ path: this.redirect || '/' })  //路由跳转
              this.loading = false // 关闭登录按钮加载动画
            }).catch(() => {//服务器返回错误
              this.loading = false //关闭登录按钮加载动画
            })
          } else {//验证失败
            console.log('error submit!!')
            return false
          }
        })
      }
    }
  }
</script>

<style lang="scss">
  /* 修复input 背景不协调 和光标变色 */
  /* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

  $bg: #283443;
  $light_gray: #fff;
  $cursor: #3582FB;

  @supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
    .login-container .el-input input {
      color: $cursor;
    }
  }

  /* reset element-ui css */
  .login-container {

    .el-input {
      display: inline-block;
      height: 47px;
      width: 80%;

      input {
        background: transparent;
        border: 0px;
        -webkit-appearance: none;
        padding: 12px 5px 12px 15px;
        color: #333;
        font-size: 16px;
        height: 47px;
        caret-color: $cursor;

        &:-webkit-autofill {
          /* box-shadow: 0 0 0px 0px #3582FB inset !important; */
          -webkit-text-fill-color: $cursor !important;
        }
      }
    }

    .el-form-item {
      border-bottom: 1.2px solid #3582FB;
      padding-top: 20px;
      /* color: #454545; */
    }
  }
</style>

<style lang="scss" scoped>
  $bg: #2d3a4b;
  $dark_gray: #889aa4;
  $light_gray: #eee;
  $font_family: "Source Han Sans CN";

  .login-container {
    display: flex;
    min-height: 100%;
    width: 100%;
    background-image: url(~@/assets/image/loginbg.png);
    background-repeat: no-repeat;
    background-size: 100% 100%;
    overflow: hidden;

    .login-inside-container {
      display: flex;
      margin: auto;
      width: 1200px;
      height: 720px;
      background-image: url(~@/assets/image/loginimg.png);
      background-repeat: no-repeat;
      background-size: 100% 100%;

      .login-left {
        font-family: $font_family;
        color: #fff;
        text-align: center;
        margin: auto 0;
        padding-left: 230px;
        padding-right: 135px;

        h1 {
          font-size: 40px;
          font-weight: 590;
        }

        h3 {
          margin-top: 40px;
          font-size: 30px;
          font-weight: 400;
        }
      }

      .login-right {
        /* background-color: #fff; */
        width: 400px;
        margin-left: 60px;
      }
    }

    .login-form {
      position: relative;
      width: 520px;
      max-width: 100%;
      padding: 160px 35px 0;
      margin: 0 auto;
      overflow: hidden;
    }

    .tips {
      font-size: 14px;
      color: #fff;
      margin-bottom: 10px;

      span {
        &:first-of-type {
          margin-right: 16px;
        }
      }
    }

    .svg-container {
      padding: 6px 5px 6px 15px;
      color: $dark_gray;
      vertical-align: middle;
      width: 30px;
      display: inline-block;
    }

    .title-container {
      display: flex;

      img {
        width: 200px;
        margin: 0px auto 50px;
      }

    }

    .show-pwd {
      position: absolute;
      right: 10px;
      top: 7px;
      font-size: 16px;
      color: $dark_gray;
      cursor: pointer;
      user-select: none;
    }
  }
</style>